CVE-2026-7787 Details
Description
IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references.
An authentication bypass vulnerability has been identified in IBM Langflow OSS versions 1.0.0 through 1.9.1. This vulnerability allows an authenticated user to read or modify sensitive information by exploiting insecure direct object references. The issue arises in the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint, where the inputs.session parameter can be manipulated to override the session ID used during flow execution. This lack of proper session isolation enables access to chat history from other users' sessions, particularly when the targeted session was created through the authenticated POST /api/v1/run/{flow_id} path.
Users are advised to upgrade IBM Langflow OSS to version 1.9.2.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.ibm.com/support/pages/node/7275453 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| langflow langflow | >= 1.0.0, < 1.9.2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 16, 2026 | Initial Analysis | [email protected] |
| Jun 11, 2026 | New CVE Received | [email protected] |